diff --git a/build/extlib/asmack/source.txt b/build/extlib/asmack/source.txt
new file mode 100644
index 0000000000..22efd20f39
--- /dev/null
+++ b/build/extlib/asmack/source.txt
@@ -0,0 +1 @@
+http://code.google.com/p/asmack/
diff --git a/build/extlib/commons-lang/source.txt b/build/extlib/commons-lang/source.txt
new file mode 100644
index 0000000000..cbebf0f002
--- /dev/null
+++ b/build/extlib/commons-lang/source.txt
@@ -0,0 +1 @@
+http://ftp.heanet.ie/mirrors/www.apache.org/dist//commons/lang/binaries/commons-lang3-3.1-bin.zip
diff --git a/build/extlib/dropbox-sdk/source.txt b/build/extlib/dropbox-sdk/source.txt
new file mode 100644
index 0000000000..abd203a970
--- /dev/null
+++ b/build/extlib/dropbox-sdk/source.txt
@@ -0,0 +1 @@
+https://www.dropbox.com/static/developers/dropbox-android-sdk-1.5.1.zip
diff --git a/build/extlib/flattr4j/source.txt b/build/extlib/flattr4j/source.txt
new file mode 100644
index 0000000000..aa245f8ef8
--- /dev/null
+++ b/build/extlib/flattr4j/source.txt
@@ -0,0 +1 @@
+http://www.shredzone.org/attachments/download/223/flattr4j-core-2.4.jar
diff --git a/build/extlib/httpmime/source.txt b/build/extlib/httpmime/source.txt
new file mode 100644
index 0000000000..9bcb07f8c6
--- /dev/null
+++ b/build/extlib/httpmime/source.txt
@@ -0,0 +1 @@
+http://repo1.maven.org/maven2/org/apache/httpcomponents/httpmime/4.0.3/httpmime-4.0.3.jar
diff --git a/build/extlib/json-simple/source.txt b/build/extlib/json-simple/source.txt
new file mode 100644
index 0000000000..30f1c9a14a
--- /dev/null
+++ b/build/extlib/json-simple/source.txt
@@ -0,0 +1 @@
+http://json-simple.googlecode.com/files/json_simple-1.1.jar
diff --git a/build/extlib/junit/source.txt b/build/extlib/junit/source.txt
new file mode 100644
index 0000000000..72f6530246
--- /dev/null
+++ b/build/extlib/junit/source.txt
@@ -0,0 +1 @@
+http://repo1.maven.org/maven2/junit/junit/4.10/junit-4.10.jar